[linux.git] / sound / soc / au1x / db1200.c

/*
 * DB1200 ASoC audio fabric support code.
 *
 * (c) 2008-9 Manuel Lauss <[email protected]>
 *
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <asm/mach-au1x00/au1000.h>
#include <asm/mach-au1x00/au1xxx_psc.h>
#include <asm/mach-au1x00/au1xxx_dbdma.h>
#include <asm/mach-db1x00/bcsr.h>

#include "../codecs/wm8731.h"
#include "psc.h"

/*-------------------------  AC97 PART  ---------------------------*/

static struct snd_soc_dai_link db1200_ac97_dai = {
	.name		= "AC97",
	.stream_name	= "AC97 HiFi",
	.codec_dai_name	= "ac97-hifi",
	.cpu_dai_name	= "au1xpsc_ac97.1",
	.platform_name	= "au1xpsc-pcm.1",
	.codec_name	= "ac97-codec.1",
};

static struct snd_soc_card db1200_ac97_machine = {
	.name		= "DB1200_AC97",
	.dai_link	= &db1200_ac97_dai,
	.num_links	= 1,
};

/*-------------------------  I2S PART  ---------------------------*/

static int db1200_i2s_startup(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	int ret;

	/* WM8731 has its own 12MHz crystal */
	snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL,
				12000000, SND_SOC_CLOCK_IN);

	/* codec is bitclock and lrclk master */
	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_LEFT_J |
			SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
	if (ret < 0)
		goto out;

	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_LEFT_J |
			SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
	if (ret < 0)
		goto out;

	ret = 0;
out:
	return ret;
}

static struct snd_soc_ops db1200_i2s_wm8731_ops = {
	.startup	= db1200_i2s_startup,
};

static struct snd_soc_dai_link db1200_i2s_dai = {
	.name		= "WM8731",
	.stream_name	= "WM8731 PCM",
	.codec_dai_name	= "wm8731-hifi",
	.cpu_dai_name	= "au1xpsc_i2s.1",
	.platform_name	= "au1xpsc-pcm.1",
	.codec_name	= "wm8731.0-001b",
	.ops		= &db1200_i2s_wm8731_ops,
};

static struct snd_soc_card db1200_i2s_machine = {
	.name		= "DB1200_I2S",
	.dai_link	= &db1200_i2s_dai,
	.num_links	= 1,
};

/*-------------------------  COMMON PART  ---------------------------*/

static struct platform_device *db1200_asoc_dev;

static int __init db1200_audio_load(void)
{
	int ret;

	ret = -ENOMEM;
	db1200_asoc_dev = platform_device_alloc("soc-audio", 1); /* PSC1 */
	if (!db1200_asoc_dev)
		goto out;

	/* DB1200 board setup set PSC1MUX to preferred audio device */
	if (bcsr_read(BCSR_RESETS) & BCSR_RESETS_PSC1MUX)
		platform_set_drvdata(db1200_asoc_dev, &db1200_i2s_machine);
	else
		platform_set_drvdata(db1200_asoc_dev, &db1200_ac97_machine);

	ret = platform_device_add(db1200_asoc_dev);

	if (ret) {
		platform_device_put(db1200_asoc_dev);
		db1200_asoc_dev = NULL;
	}
out:
	return ret;
}

static void __exit db1200_audio_unload(void)
{
	platform_device_unregister(db1200_asoc_dev);
}

module_init(db1200_audio_load);
module_exit(db1200_audio_unload);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("DB1200 ASoC audio support");
MODULE_AUTHOR("Manuel Lauss");
Commit	Line	Data
05ae3231 ML	1	/*
	2	* DB1200 ASoC audio fabric support code.
	3	*
	4	* (c) 2008-9 Manuel Lauss <[email protected]>
	5	*
	6	*/
	7
	8	#include <linux/module.h>
	9	#include <linux/moduleparam.h>
	10	#include <linux/timer.h>
	11	#include <linux/interrupt.h>
	12	#include <linux/platform_device.h>
	13	#include <sound/core.h>
	14	#include <sound/pcm.h>
	15	#include <sound/soc.h>
05ae3231 ML	16	#include <asm/mach-au1x00/au1000.h>
	17	#include <asm/mach-au1x00/au1xxx_psc.h>
	18	#include <asm/mach-au1x00/au1xxx_dbdma.h>
	19	#include <asm/mach-db1x00/bcsr.h>
	20
05ae3231 ML	21	#include "../codecs/wm8731.h"
	22	#include "psc.h"
	23
	24	/------------------------- AC97 PART ---------------------------/
	25
	26	static struct snd_soc_dai_link db1200_ac97_dai = {
	27	.name = "AC97",
	28	.stream_name = "AC97 HiFi",
f0fba2ad	29	.codec_dai_name = "ac97-hifi",
ffc4fdbb ML	30	.cpu_dai_name = "au1xpsc_ac97.1",
	31	.platform_name = "au1xpsc-pcm.1",
	32	.codec_name = "ac97-codec.1",
05ae3231 ML	33	};
	34
	35	static struct snd_soc_card db1200_ac97_machine = {
	36	.name = "DB1200_AC97",
	37	.dai_link = &db1200_ac97_dai,
	38	.num_links = 1,
05ae3231 ML	39	};
	40
	41	/------------------------- I2S PART ---------------------------/
	42
	43	static int db1200_i2s_startup(struct snd_pcm_substream *substream)
	44	{
	45	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad LG	46	struct snd_soc_dai *codec_dai = rtd->codec_dai;
f0fba2ad LG	47	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
05ae3231 ML	48	int ret;
	49
	50	/* WM8731 has its own 12MHz crystal */
9745e824	51	snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL,
05ae3231 ML	52	12000000, SND_SOC_CLOCK_IN);
	53
	54	/* codec is bitclock and lrclk master */
	55	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_LEFT_J \|
	56	SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_CBM_CFM);
	57	if (ret < 0)
	58	goto out;
	59
	60	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_LEFT_J \|
	61	SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_CBM_CFM);
	62	if (ret < 0)
	63	goto out;
	64
	65	ret = 0;
	66	out:
	67	return ret;
	68	}
	69
	70	static struct snd_soc_ops db1200_i2s_wm8731_ops = {
	71	.startup = db1200_i2s_startup,
	72	};
	73
	74	static struct snd_soc_dai_link db1200_i2s_dai = {
	75	.name = "WM8731",
	76	.stream_name = "WM8731 PCM",
ffc4fdbb ML	77	.codec_dai_name = "wm8731-hifi",
	78	.cpu_dai_name = "au1xpsc_i2s.1",
	79	.platform_name = "au1xpsc-pcm.1",
99b59f3c	80	.codec_name = "wm8731.0-001b",
05ae3231 ML	81	.ops = &db1200_i2s_wm8731_ops,
	82	};
	83
	84	static struct snd_soc_card db1200_i2s_machine = {
	85	.name = "DB1200_I2S",
	86	.dai_link = &db1200_i2s_dai,
	87	.num_links = 1,
05ae3231 ML	88	};
	89
	90	/------------------------- COMMON PART ---------------------------/
	91
	92	static struct platform_device *db1200_asoc_dev;
	93
	94	static int __init db1200_audio_load(void)
	95	{
	96	int ret;
	97
	98	ret = -ENOMEM;
ffc4fdbb	99	db1200_asoc_dev = platform_device_alloc("soc-audio", 1); /* PSC1 */
05ae3231 ML	100	if (!db1200_asoc_dev)
	101	goto out;
	102
	103	/* DB1200 board setup set PSC1MUX to preferred audio device */
	104	if (bcsr_read(BCSR_RESETS) & BCSR_RESETS_PSC1MUX)
f0fba2ad	105	platform_set_drvdata(db1200_asoc_dev, &db1200_i2s_machine);
05ae3231	106	else
f0fba2ad	107	platform_set_drvdata(db1200_asoc_dev, &db1200_ac97_machine);
05ae3231	108
05ae3231 ML	109	ret = platform_device_add(db1200_asoc_dev);
	110
	111	if (ret) {
	112	platform_device_put(db1200_asoc_dev);
	113	db1200_asoc_dev = NULL;
	114	}
	115	out:
	116	return ret;
	117	}
	118
	119	static void __exit db1200_audio_unload(void)
	120	{
	121	platform_device_unregister(db1200_asoc_dev);
	122	}
	123
	124	module_init(db1200_audio_load);
	125	module_exit(db1200_audio_unload);
	126
	127	MODULE_LICENSE("GPL");
	128	MODULE_DESCRIPTION("DB1200 ASoC audio support");
	129	MODULE_AUTHOR("Manuel Lauss");